Ultrasonic welding mechanism for breathing filter

Abstract

The present invention discloses an ultrasonic welding mechanism for a respiratory filter, which relates to the technical field of tooling and fixtures, and includes an ultrasonic welding machine, a turntable, a cam and a clamping device. A driving mechanism is rotatably connected below the turntable, and a loading station, a welding station, an auxiliary station and a unloading station are arranged on the edge of the turntable. A sliding member is slidably connected to the fixed seat, and a bearing is rotatably connected to the sliding member. A fixed cam is arranged on the side of the welding station, and the cam is rollingly connected to the bearing. The shape of one side of the cam that fits the bearing corresponds to the welding edge of the respiratory filter. Compared with the prior art, the present invention has the following beneficial effects: (1) Automatic loading, welding and unloading are realized, welding efficiency is improved, and multiple specifications of respiratory filters are compatible, and the time for manual replacement of tooling of different specifications and positioning adjustment time are reduced. (2) The opening and closing of the tooling module is controlled by the cam curved surface to match the taking of respiratory filters of various shapes, while reducing the risk of cold welding. (3) The functions are diversified, and other processes can be implemented on the station.

Description

Technical Field

[0001] The invention relates to the technical field of tooling fixtures, and in particular to an ultrasonic welding mechanism for a breathing filter. Background Art

[0002] Ultrasonic welding uses high-frequency vibration waves to transmit to the surfaces of two objects to be welded. Under pressure, the two surfaces rub against each other to form a fusion between the molecular layers. Respiratory filters have special shapes and many specifications. It takes a long time to change molds and welding is more troublesome. When welding, individuals need to manually load and unload materials, which is inefficient and requires high operating skills of workers, posing a great risk to personal safety. In addition, manual welding cannot guarantee the welding quality of certain curved surfaces. Summary of the invention

[0003] 1. Technical problem to be solved by the invention

[0004] In response to the above technical problems, the present invention provides an ultrasonic welding mechanism for a respiratory filter, which switches the four working positions of respiratory filter loading, auxiliary functions, welding and unloading through the rotation angle of a turntable, thereby realizing automatic loading, welding and unloading, improving welding efficiency, and controlling the opening and closing of the tooling module through the cam surface to match the taking of respiratory filters of various shapes, while reducing the risk of cold welding.

[0005] 2. Technical solution

[0006] To solve the above problems, the technical solution provided by the present invention is:

[0007] An ultrasonic welding mechanism for a breathing filter includes an ultrasonic welding machine, a turntable, a cam and a clamping device. A driving mechanism is rotatably connected below the turntable. A loading station, a welding station, an auxiliary station and a unloading station are arranged on the edge of the turntable. The ultrasonic welding machine corresponds to the welding station, and the clamping device corresponds to the unloading station. Each of the stations is provided with a fixed seat fixed to the turntable. A sliding member is slidably connected to the fixed seat. An elastic element is arranged between the sliding member and the fixed seat. A bearing is rotatably connected to the sliding member. A groove for fixing the breathing filter is arranged on the top of the sliding member. A fixed cam is arranged on the side of the welding station. The cam is rollingly connected to the bearing. The shape of one side of the cam that fits the bearing corresponds to the welding edge of the breathing filter. The ultrasonic welding machine, the driving mechanism, the cam and the clamping device are all fixed to the ground or other platforms. The driving mechanism is used to drive the turntable to rotate a certain angle. The four stations, namely, the loading station, the welding station, the auxiliary station and the unloading station, all have their own functions. The loading station is used for loading, and the breathing filter can be clamped to the fixed seat by a manipulator or other devices; the welding station is used for welding; the auxiliary station can be used for other processes; the unloading station is used for the clamping device to remove the breathing filter from the fixed seat. The fixed seat is used to fix the breathing filter, limit the sliding direction of the sliding part, and prevent the sliding part from falling out. The fixed seat is provided with a structure to block the sliding part. During welding, the bearing rolls on the cam. Since the bearing is fixed to the sliding part, the displacement of the bearing in the radial direction of the turntable is determined by the shape of the contact surface between the cam and the bearing, so the welding surface of the breathing filter can be determined by the shape of the cam. The shapes of the grooves of the breathing filter and the sliding part are adapted to each other, and the breathing filter is fixed more stably. The sliding part moves under the joint control of the reaction force of the elastic element and the bearing.

[0008] Optionally, the fixed seat is provided with a slide groove matched with the sliding member, and the sliding member is provided with a matching protruding slide bar. The slide groove opening is located inside the fixed seat, and the protruding slide bar is clamped in the slide groove, which can effectively prevent the sliding member from falling out.

[0009] Optionally, the fixing seat is fixed to the rotating disk by fasteners, and the fastener connection is convenient for assembly and disassembly.

[0010] As an option, the number of the fixed seats matches the workstations and is evenly distributed on the edge of the turntable in a "cross" shape. Evenly distributed workstations and fixed seats can reasonably arrange the turntable space and avoid conflicts between workstations and fixed seats.

[0011] Optionally, the cam is symmetrically arc-shaped, and the arc in the middle of the cam is larger than that on both sides. The arc-shaped edge of the cam is adapted to the shape of the welding surface of the breathing filter, solving the problem of curved surface modeling of the breathing filter, so that the welding surface of the breathing filter is completely in contact with the welding positioning tooling during welding, avoiding the inability to effectively weld without a contact surface during ultrasonic welding, causing leakage of the breathing filter.

[0012] Optionally, the turntable is provided with a plurality of through holes, which are used to reduce the weight of the turntable.

[0013] As an option, the bearing and the cam are located in the same horizontal plane. Since the bearing and the cam need to be out of contact and the bearing rolls on one side of the cam, it is required that the two are located in the same horizontal plane.

[0014] Optionally, the driving mechanism is a four-station cam divider, which can provide intermittent driving rotation, in line with the four-station distribution setting.

[0015] Optionally, the sliding member slides back and forth along the radial direction of the turntable.

[0016] Optionally, the clamping device is provided with a clamp adapted to the breathing filter, and the clamp is used to conveniently clamp the breathing filter out of the sliding member.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] (1) An ultrasonic welding mechanism for a respiratory filter proposed in an embodiment of the present application realizes automatic loading, welding and unloading, thereby improving welding efficiency. It realizes automatic loading, welding and unloading, thereby improving welding efficiency. At the same time, it is compatible with respiratory filters of various specifications, thereby reducing the time for manual replacement of tooling of different specifications and the time for positioning adjustment.

[0020] (2) An ultrasonic welding mechanism for a respiratory filter proposed in an embodiment of the present application controls the opening and closing of a tooling module through a cam surface, thereby matching respiratory filters of various shapes and reducing the risk of cold welding.

[0021] (3) The ultrasonic welding mechanism for a breathing filter proposed in the embodiment of the present application has diversified functions and can implement other processes at the work station. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of an ultrasonic welding mechanism for a breathing filter proposed in an embodiment of the present invention;

[0023] Figure 2 A partial enlarged view of an ultrasonic welding mechanism of a breathing filter proposed in an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a turntable of an ultrasonic welding mechanism for a breathing filter proposed in an embodiment of the present invention;

[0025] Figure 4A top view of a turntable of an ultrasonic welding mechanism for a breathing filter according to an embodiment of the present invention.

[0026] 1. Ultrasonic welding machine; 2. Turntable; 21. Driving mechanism; 22. Fixed seat; 23. Bearing; 24. Sliding piece; 25. Slide; 201. Loading position; 202. Welding station; 203. Auxiliary station; 204. Unloading station; 3. Breathing filter; 4. Cam; 5. Clamping device. DETAILED DESCRIPTION

[0027] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the invention are shown in the accompanying drawings. The words "first", "second", etc. described in the present invention are set for the convenience of describing the technical solution of the present invention, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present invention. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradictions or conflicts, all of which are within the scope of protection required by the present invention.

[0029] Example

[0030] Combined with Figure 1-4, an ultrasonic welding mechanism for a breathing filter, comprising an ultrasonic welding machine 1, a turntable 2, a cam 4 and a clamping device 5, wherein a four-station cam 4 divider is rotatably connected below the turntable 2. The four-station cam 4 divider can provide intermittent drive rotation, which conforms to the distribution arrangement of the four stations. The turntable 2 is provided with a plurality of through holes. The through holes are used to reduce the weight of the turntable 2. A loading station 201, a welding station 202, an auxiliary station 203 and a unloading station 204 are provided on the edge of the turntable 2, the ultrasonic welding machine 1 corresponds to the welding station 202, the clamping device 5 corresponds to the unloading station 204, and each of the stations is provided with a fixed seat 22 fixed to the turntable 2, and a sliding member 24 is slidably connected to the fixed seat 22. An elastic element is provided between the sliding member 24 and the fixed seat 22, and the elastic element is a spring. The sliding member 24 is rotatably connected with a bearing 23, and a groove for fixing the breathing filter 3 is provided on the top of the sliding member 24. A fixed cam 4 is provided on the side of the welding station 202, and the cam 4 is rollingly connected with the bearing 23. The shape of one side of the cam 4 that fits the bearing 23 corresponds to the welding edge of the breathing filter 3. The ultrasonic welding machine 1, the driving mechanism 21, the cam 4 and the clamping device 5 are all fixed to the ground or other platforms, and the driving mechanism 21 is used to drive the turntable 2 to rotate a certain angle. The number of the fixed seats 22 matches the stations, and they are evenly distributed on the edge of the turntable 2 in a "cross" shape. The evenly distributed stations and fixed seats 22 can reasonably arrange the space of the turntable 2 to avoid conflicts between the stations and the fixed seats 22. The four stations, namely, the loading station 201, the welding station 202, the auxiliary station 203 and the unloading station 204, all have their own functions. The loading station 201 is used for loading, and a manipulator or other device can be used to clamp the breathing filter 3 to the fixed seat 22; the welding station 202 is used for welding; the auxiliary station 203 can be used for other processes; the unloading station 204 is used for the clamping device 5 to remove the breathing filter 3 from the fixed seat 22. The fixed seat 22 is used to fix the breathing filter 3, limit the sliding direction of the sliding member 24, and prevent the sliding member 24 from falling out. The fixed seat 22 is provided with a structure to block the sliding member 24. The fixed seat 22 is provided with a slide groove 25 that cooperates with the sliding member 24, and the sliding member 24 is provided with a matching protruding slide bar. The opening of the slide groove 25 is located on the inner side of the fixed seat 22, and the protruding slide bar is clamped in the slide groove 25, which can effectively prevent the sliding member 24 from falling out. During welding, the bearing 23 rolls on the cam 4, and the bearing 23 and the cam 4 are located in the same horizontal plane. Since the bearing 23 is fixedly connected to the sliding member 24, the displacement of the bearing 23 in the radial direction of the turntable 2 is determined by the shape of the contact surface between the cam 4 and the bearing 23, so the welding surface of the breathing filter 3 can be determined by the shape of the cam 4. The cam 4 is a symmetrical arc, and the arc in the middle of the cam 4 is larger than that on both sides.The arcuate edge of the cam 4 is matched with the shape of the welding surface of the breathing filter 3, which solves the problem of curved surface modeling of the breathing filter 3, so that the welding surface of the breathing filter 3 is completely in contact with the welding positioning tooling during welding, avoiding the ineffective welding without contact surface during ultrasonic welding, which causes the breathing filter 3 to leak. The shape of the groove of the breathing filter 3 and the sliding member 24 are matched, and the breathing filter 3 is fixed more stably. The fixing seat 22 is fixed to the turntable 2 by fasteners. The fastener connection is convenient for disassembly and assembly.

[0031] Working principle:

[0032] The suction filter can be manually or mechanically grabbed and placed in the loading station 201, and then after the turntable 2 rotates to the welding station 202, the sliding member 24 slowly moves inward along the cam 4 curve of the arc cam 4. When the sliding member 24 moves to the bottom of the ultrasonic welding machine 1, the welding head of the ultrasonic welding machine 1 presses down to weld. After the welding is completed, the ultrasonic welding head rises, and the sensor detects the rising position of the welding head at the same time. After rising to the set position. The turntable 2 rotates, and the bearing 23 is separated from the cam 4 along the cam 4 curve of the arc cam 4 under the action of the internal spring. After the welding is completed, the turntable 2 rotates, and the breathing filter 3 rotates to the auxiliary station 203. The function of the auxiliary station 203 is the auxiliary function of the product. After the end, the turntable 2 continues to rotate, and the breathing filter 3 is taken off the breathing filter 3 at the unloading station 204 by the clamping device 5 and placed in the designated position.

[0033] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A breathing filter ultrasonic welding mechanism, characterized in that: It includes an ultrasonic welding machine, a turntable, a cam and a clamping device. A driving mechanism is rotatably connected under the turntable. A loading station, a welding station, an auxiliary station and a unloading station are arranged on the edge of the turntable. The positions of the ultrasonic welding machine and the welding station correspond to each other, and the positions of the clamping device and the unloading station correspond to each other. Each of the stations is provided with a fixed seat fixed to the turntable, a sliding member is slidably connected to the fixed seat, an elastic element is arranged between the sliding member and the fixed seat, a bearing is rotatably connected to the sliding member, a groove for fixing the breathing filter is arranged on the top of the sliding member, a fixed cam is arranged on the side of the welding station, the cam is rollingly connected to the bearing, and the shape of one side of the cam fitting with the bearing corresponds to the welding edge of the breathing filter.

2. The ultrasonic welding mechanism for a breathing filter according to claim 1, characterized in that: The fixing seat is provided with a sliding groove matched with the sliding piece, and the sliding piece is provided with a matching protruding sliding strip.

3. The ultrasonic welding mechanism for a breathing filter according to claim 1, characterized in that: The fixing seat is fixed to the rotating disk via a fastener.

4. The ultrasonic welding mechanism for a breathing filter according to claim 1, characterized in that: The number of the fixed seats matches the workstations and is evenly distributed on the edge of the turntable in a "cross" shape.

5. The ultrasonic welding mechanism for a breathing filter according to claim 1, characterized in that: The cam is in a symmetrical arc shape, and the arc of the middle part of the cam is larger than that of the two sides.

6. The ultrasonic welding mechanism for a breathing filter according to claim 1, characterized in that: The rotating disk is provided with a plurality of through holes.

7. The ultrasonic welding mechanism for a breathing filter according to claim 1, characterized in that: The bearing and the cam are located in the same horizontal plane.

8. The ultrasonic welding mechanism for a breathing filter according to claim 1, characterized in that: The driving mechanism is a four-station cam divider.

9. An ultrasonic welding mechanism for a breathing filter according to any one of claims 1 to 8, characterized in that: The sliding member slides back and forth along the radial direction of the rotating disk.

10. An ultrasonic welding mechanism for a breathing filter according to any one of claims 1 to 8, characterized in that: The clamping device is provided with a clamp matched with the breathing filter.

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